scholarly journals Enhanced capacitive performance of cathodically reduced titania nanotubes pulsed deposited with Mn2O3 as supercapacitor electrode

RSC Advances ◽  
2021 ◽  
Vol 11 (43) ◽  
pp. 26700-26709
Author(s):  
Muhammad Muhammad Muzakir ◽  
Zulkarnain Zainal ◽  
Hong Ngee Lim ◽  
Abdul Halim Abdullah ◽  
Noor Nazihah Bahrudin
Keyword(s):  
Electrochemical Performance ◽  
Titania Nanotubes ◽  
Pulse Electrodeposition ◽  
Mass Loading ◽  
Supercapacitor Electrode ◽  
Capacitive Performance

The mass loading of Mn2O3 by pulse electrodeposition (PED) onto reduced titania nanotubes (R-TNTs) greatly influences the electrochemical performance of the composite.

scholarly journals Enhancement of Capacitive Performance in Titania Nanotubes Modified by an Electrochemical Reduction Method

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Nurul Asma Samsudin ◽  
Zulkarnain Zainal ◽  
Hong Ngee Lim ◽  
Yusran Sulaiman ◽  
Sook-Keng Chang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Electrochemical Reduction ◽  
Photoelectron Spectroscopy ◽  
Oxygen Vacancies ◽  
Reduction Method ◽  
Titania Nanotubes ◽  
Electrochemical Anodization ◽  
Constant Current ◽  
Cyclic Voltammogram ◽  
Capacitive Performance

Highly ordered titania nanotubes (TNTs) were synthesised by an electrochemical anodization method for supercapacitor applications. However, the capacitive performance of the TNTs was relatively low and comparable to the conventional capacitor. Therefore, in order to improve the capacitive performance of the TNTs, a fast and facile electrochemical reduction method was applied to modify the TNTs (R-TNTs) by introducing oxygen vacancies into the lattice. X-ray photoelectron spectroscopy (XPS) data confirmed the presence of oxygen vacancies in the R-TNTs lattice upon the reduction of Ti4+ to Ti3+. Electrochemical reduction parameters such as applied voltage and reduction time were varied to optimize the best conditions for the modification process. The electrochemical performance of the samples was analyzed in a three-electrode configuration cell. The cyclic voltammogram recorded at 200 mV s−1 showed a perfect square-shaped voltammogram indicating the excellent electrochemical performance of R-TNTs prepared at 5 V for 30 s. The total area of the R-TNTs voltammogram was 3 times larger than the unmodified TNTs. A specific capacitance of 11.12 mF cm−2 at a current density of 20 μA cm−2 was obtained from constant current charge-discharge measurements, which was approximately 57 times higher than that of unmodified TNTs. R-TNTs also displayed outstanding cycle stability with 99% capacity retention after 1000 cycles.

scholarly journals Capacitive performance of vertically aligned reduced titania nanotubes coated with Mn2O3 by reverse pulse electrodeposition

RSC Advances ◽  
2018 ◽  
Vol 8 (41) ◽  
pp. 23040-23047 ◽  
Author(s):  
Nurul Asma Samsudin ◽  
Zulkarnain Zainal ◽  
Hong Ngee Lim ◽  
Yusran Sulaiman ◽  
Sook-Keng Chang ◽  
...  
Keyword(s):  
Titania Nanotubes ◽  
Pulse Electrodeposition ◽  
Capacitive Performance ◽  
Reverse Pulse ◽  
Vertically Aligned

Mn2O3 was coated onto reduced titania nanotubes by reverse pulse electrodeposition, showing smooth and homogenous deposits without covering the opening of the nanotubes.

Polypyrrole/cellulose nanofiber aerogel as a supercapacitor electrode material

RSC Advances ◽  
2016 ◽  
Vol 6 (110) ◽  
pp. 109143-109149 ◽  
Author(s):  
Qingyuan Niu ◽  
Yaqing Guo ◽  
Kezheng Gao ◽  
Ziqiang Shao
Keyword(s):  
Electrochemical Performance ◽  
Electrode Material ◽  
Cellulose Nanofiber ◽  
Supercapacitor Electrode ◽  
Microscopic Morphology

CIT-Fe3+ colloid can effectively control over the microscopic morphology of the PPy/CNFs aerogel, which exhibited good electrochemical performance.

Polyaniline/MnO2composite with high performance as supercapacitor electrode via pulse electrodeposition

2014 ◽  
Vol 36 (1) ◽  
pp. 113-120 ◽  
Author(s):  
Tingting Liu ◽  
Guangjie Shao ◽  
Mingtong Ji ◽  
Guiling Wang
Keyword(s):  
High Performance ◽  
Pulse Electrodeposition ◽  
Supercapacitor Electrode

Morphology and Structure Induced Co3O4 Nanowires High-Performance Supercapacitor Electrode Material

2021 ◽  
Vol 16 (6) ◽  
pp. 1005-1010
Author(s):  
Jian Wang ◽  
Yan Zhao ◽  
Yucai Li ◽  
Shiwei Song
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Structural Characteristics ◽  
High Porosity ◽  
Ni Foam ◽  
Supercapacitor Electrode ◽  
Morphology And Structure ◽  
Hydrothermal Approach ◽  
Large Capacitance ◽  
Superior Cycling Stability

The electrochemical performance of the material depends heavily on the morphologies and structural characteristics of the material. Co3O4 samples show the remarkable electrochemical performance owing to the high porosity, appropriate pore size distribution and novel architecture and the effect of NH4F for morphology. Co3O4 nanowires grown on Ni foam have been synthesized through a facile hydrothermal approach, revealing large capacitance of 2178.4 mF cm−2 at the current density of 2 mA cm−2 and superior cycling stability.

Nickel-cobalt (oxy)hydroxide battery-type supercapacitor electrode with high mass loading

2021 ◽  
pp. 132423
Author(s):  
Mingyuan Gao ◽  
Yating Li ◽  
Jinhu Yang ◽  
Yuexin Liu ◽  
Ying Liu ◽  
...  
Keyword(s):  
High Mass ◽  
Mass Loading ◽  
Supercapacitor Electrode ◽  
Nickel Cobalt

Direct growth of nickel terephthalate on Ni foam with large mass-loading for high-performance supercapacitors

2017 ◽  
Vol 5 (36) ◽  
pp. 19323-19332 ◽  
Author(s):  
Qiulin Chen ◽  
Shuijin Lei ◽  
Peiqin Deng ◽  
Xiuling Ou ◽  
Lianfu Chen ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Large Mass ◽  
High Mass ◽  
Mass Loading ◽  
Ni Foam ◽  
Direct Growth

Nickel terephthalate is grown on Ni foam with high mass-loading and its electrochemical performance can be greatly enhanced by polyaniline electrodeposition.

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